Nut-lock.



(no Mdel.)

Patented Oct. 9, |900.

W. H. CARRUTHERS.

NUT LOCK.

(Application ma .19.11.20, 1900.;

WILLIAM H. CARRUTHERS, oF CHICAGO, ILLINOIS.

NUT-LOCK.

SPECIFCATION forming' part of Letters Patent No. 659,466, dated October 9, 1906.

Application tiled January 20| 1900. Serial No. 2i088. \No model.)

To all whom zit may concern.-

Be it known that T, WILLIAM H. CARRU'HL ERS, a citizen ot' the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to improvements in nut-locks of that class in which a springmetal wire or bar of suitable cross-section is formed into a spring-ring adapted to be screwed upon the threads of a holt, so as to follow and be seated Within the helical groove thereof. Difliculty has heretofore been found in manipulating nut-locks of this character during the operation of placing them upon or removing them from the bolts; and the object of the present invention is to provide improvement-s which enable such nut-locks to be more easily manipulated and the difficulties referred to be overcome; and tov this end it consists in certain peculiarities of construction at the extremities or ends of the spring-ring which enable the expander or other tool used in applying or removing the device to be applied to better advantage and which go to produce a more iinished article, less liable to catch and hold the clothing or dirt or straw with which the bolt may be brought into proximity.

The invention will be more fully understood from the following description of the construction illustrated in the accompanying drawings, in Whichn Figure l is a face view of one form of nutlock constructed in accordance with my nvention. Figs. 2 and 3 are sectional views thereof, taken on lines 2 2 and 3 3, respectively, of Fig. l. Fig. 4 is a face view of another form of nut-lock embodying the invention. Fig. 5 is an edge elevation thereof. Fig. 6 is a section thereof, taken on line 6 6 of Fig. 4E. Fig. 7 is a face view of a nut-lock similar to that shown in Fig. 4, but made of metal of different cross-section. Fig. 8 is an edge elevation thereof.

thereof taken on line 9 9. Fig. l0 shows several different cross-sections of wire or metal which may be employed, among others, in making nut-locks of this character.

The nut-lock l (shown in Figs. l, 2, and 3) is simplyaone-revolution helix made of metal Fig. 9 is a sectionl of suitable cross-section bent to correspond with the pitch of the thread of the bolt to which it is to be applied and having its abut; ting ends 2 bent at right angles to the general plane of t-he helix, so that they project therefrom in a direction parallel tothe axis of thebolt when the nut-lock is placed there'- on.` As shown in these figures, the device is made of metal of a cross-section which is externally rectangular, but is made with a V- shaped or thread-like internal edge 3, corre; spending in shape to the thread of the bolt. The ends 2 of the ring are, furthermore, here in shown as made of less than the full depth of the section, so that bending them does not affect said V-shaped inner edge, but permits the latter to follow the thread closely to the extreme ends of said edge.

In the construction shown in Figs. 4, 5, and 6 the nut-lock 4 is made of the saniegeneral form as that shown in my previous patent., No. 614,835, patented November 29, 1898, the wire being heilt into a helix of something more than a complete circumference,with its end portions overlapping, as shown. '[he extremities 5 of said ends are, however,bent at right angles to the body of the nut-lock or parallel with the axis of the inserted bolt, as in the construction first described, instead of being permitted to project outwardly, as in said prior patent. The metal used for this nut-lock 4 is of similar cross-section to that of the device shown in Figs. l, 2, and 3, and its extremities 5 are reduced in depth in the same manner and for the same'purpose as before.

The nut-lock 6 (shown in Figs. 7, 8, and 9) is identicalwith that shown in Figst, 5, and 6, except that the metal is additionally strengthened byincreasing the stock on its outer edge, which is herein shown as also beveled off to a V shape. It will, however, be understood that any suitable cross-section of metal may be employed in making nutlocks in accordance with my invention besides the cross-section heretofore described, and in Fig. lOI have illustrated several more of the many forms which may be employed, and it will also he understood that while the reducing of the extremities of the wire to less than its full depth, as shown in Figs. 1 to 9, is of advantage in that it leaves the IOO thread-like inner edge of the metal unbent and denite, the invention is, nevertheless, not limited to this construction.

The bending of the extremities of the metal at right angles to the body portion of the nutlock not only aords in practice a better purchase for the expander or other tool used in applying or removing the device, but brings said ends down close to the bolt, where they are less liable to catch and lacerate the person or clothing of people moving in the vi-v cinity of the nut-lock or to catch and hold straw and lint or other material which may be brought into contact therewith.

I claim as my invention- 1. A nut-lock consisting of a coiled piece of spring metal adapted to fit between the threads of a bolt and having its extremities bent parallel to the axis of the bolt, substantially as described.

2. A nut-lock comprising a coiled piece of spring metal Whose ends overlap each other and are bent at right angles to the body ot' the device at their extremities, substantially as described.

3. A nut-lock consisting of a coiled piece of spring metal having a thread-like inner edge and overlapping ends, the extremities of said ends being reduced in depth and bent at right angles to the body of the device, sub stantially as described.

In testimony that I claim the foregoing as my invention Iaiix my signature, in presence of two subscribingr witnesses, this 17th day of January, A. D. 1900. l

WILLIAM H. CARRUTHERS.

Witnesses:

HENRY W. CARTER, ALBERT H. GRAVES. 

